Associated Press Minnesota nickel-mine permit revoked by Army Corps over downstream water threat The permit did not ensure compliance with water-quality requirements of the Fond du Lac Band of ...

The Corps sided with the Fond du Lac Band and the EPA, concluding that a wetlands permit for the open-pit mine may not prevent mercury pollution and other contamination from violating the Band’s ...

The U.S. Army Corps of Engineers has revoked a crucial federal permit for the proposed NewRange Copper Nickel mine in northeastern Minnesota, saying the permit did not comply with the water ...

The U.S. Army Corps of Engineers said Tuesday it has revoked a crucial federal permit for the proposed NewRange Copper Nickel mine in northeastern Minnesota, a project popularly known as PolyMet ...

A decision on whether to reissue a permit to mine for the company vying to open Minnesota’s first copper-nickel mine is on hold after the company behind it said it is studying potential changes ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

MINNEAPOLIS (AP) — The developers of a long-delayed copper-nickel mining project in northeastern Minnesota announced Wednesday that they plan to conduct a series of studies over the next year on ...

FILE - A former iron ore processing plant near Hoyt Lakes, Minn., that would become part of a proposed PolyMet copper-nickel mine, is pictured on Feb. 10, 2016. (AP Photo/Jim Mone, File) (Jim Mone ...